JP2622074B2 - Corner dimension measuring device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a corner size measuring device for measuring a size from a joint between two angled members to an arbitrary position provided on each of these members.

[0002]

2. Description of the Related Art Conventionally, in the field of construction, civil engineering, or machine assembly, for example, one or both of two members joined at a predetermined angle are fastened to another member by fastening means such as bolts. There are many scenes that you do.

For example, as shown in FIG. 9, in a steel tower for a high-voltage transmission line or the like, a horizontal member 102 is attached to a main pillar member 100.
In some cases, the connecting member 104 and the like are attached to the horizontal member 102 using fastening means such as bolts.
At this time, the connecting member 104 and the horizontal member 102 are provided with bolt piercing portions 105 and 106 for fastening, respectively, and the pitch 110 of the bolt piercing portions 105 and 106 and the main pillar member 100 are provided. Dimensions 108 from the joint portion of the horizontal member 102 to the bolt hole 105 of the horizontal member 102 (the bolt hole 105 on the left side in FIG. 9).
Are set in advance by design. However, during actual installation work, these pitches 110 and dimensions 108
May deviate from an appropriate value, or the connecting member 104 may not be attached to the horizontal member 102 for various reasons such as an assembly error.

Therefore, in assembling the above-mentioned steel tower, in order to find out such inconvenience in advance, prior to the assembling work on site, a temporary assembling inspection of the steel tower is performed to find out a deviation of the pitch 110 and the dimension 108 and the like. For example, the drilling positions and the like of the bolt drilling portions 105 and 106 are appropriately corrected by an operation such as additional machining.

[0005]

By the way, in the above-mentioned steel tower structure, the main column member 100 and the horizontal member 102 are often joined by fillet welding.

Therefore, in the above-described temporary assembly inspection, even if the pitch 110 of the bolt holes 105 and 106 can be measured, the main column member 100 and the horizontal member 1 can be measured.
02 from the joint portion 02 to the bolt hole 1 of the horizontal member 102
Measuring dimensions 108 up to 05 may not be possible due to the presence of the weld 120 as shown in FIG.

In such a case, under the present circumstances, an operator measures a dimension by mounting a steel measure on the upper portion of the welded portion 120, and estimates or calculates an actual dimension 108 from this dimension. , The bolt piercing portion 1 based on the value
05 is corrected.

However, in such a measuring operation,
Work efficiency is poor, and above all, there is a disadvantage that measurement values are not accurate.

Therefore, in order to solve the above-mentioned inconveniences, a contact-type jig that can measure dimensions while avoiding the welded portion 120 in accordance with the angle formed between the main column member 100 and the horizontal member 102 is used. However, since the angle formed between the main column member 100 and the horizontal member 102 differs for each tower or each part of the tower, the number of jigs manufactured according to all angles is extremely large. It is inconvenient to store jigs or carry high-altitude work such as a steel tower.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-described problem, and the size of a member from a joint portion between two angled members to an arbitrary position provided on each of these members is determined. It is an object of the present invention to provide a dimension measuring device for a corner portion that can be measured without being affected by an angle or a welded portion.

[0011]

SUMMARY OF THE INVENTION The present invention is an apparatus for measuring a dimension from a joint portion between two members having an angle to an arbitrary position on each member, wherein the two plate members have the same rotation axis. While being stacked so that it can rotate relatively,
Each of these plate members is provided with a scale member which is in contact with the above-mentioned members and is slidable along each of these members, and one of the plate members is provided with an angle scale, and the other plate member is provided with an angle scale. Is provided with a pointer member for indicating the angle formed by the two members on the angle scale, and each plate member has a corresponding angle formed by the angle scale and the angle formed by the two members read by the pointer member. Slide scales each indicating a position where each of the scale members should be slid are provided, and each of the scale members is provided with a pointer member for positioning each of the scale members on a predetermined scale of the slide scale. (Claim 1).

Also, the present invention is an apparatus for measuring a dimension from a joint portion between two members having an angle to an arbitrary position on each member, wherein the two plate members have the same rotation axis and are relatively rotatable. At the same time, each of the plate members is fitted with a scale member which is in contact with the above-mentioned members and is slidable along the respective members. At the intersection of the two members, an intersection position scale indicating the intersection position between the plate members corresponding to the angle formed by the two members is provided, and the scale members are read in accordance with the intersection position read by the intersection position scale. A slide graduation indicating a position at which the plate should be slid is provided, and each of the scale members has a predetermined slide graduation of each of the plate members. Pointer member for positioning the scale are those which are provided (claim 2).

Further, in the second aspect, the intersection position scale and the slide scale written on each plate member may be formed by connecting the corresponding scales with a line segment. Item 3).

[0014]

When measuring the dimension from the joint between two angled members to an arbitrary position on each member using the corner size measuring device according to the first aspect, first, each scale member is measured. Are brought into contact with the respective members, and in this state, the angle formed by the two members is read from the position of the angle scale indicated by the pointer member of the plate member. Then, after moving each scale member so that the pointer member of each scale member is positioned at the position of the slide scale corresponding to this angle, by reading the dimensions on the scale member, the joint portion between the two members can be read. The dimensions up to an arbitrary position on each member can be measured.

According to this, even if a welded portion or the like is present at the joint between the two members having an angle, the dimension from the joint between the two members to an arbitrary position on each member can be accurately measured. Becomes possible. At this time, each plate member is rotated in accordance with the angle formed by the two members to read the angle formed by the two members, and each scale member is moved in accordance with the rotation, so that it is affected by the angle formed by the two members. The measurement can be performed without the need.

Also, when measuring a dimension from a joint portion between two angled members to an arbitrary position on each member using the corner dimension measuring device according to the second aspect, each scale is used. A member is brought into contact with each of the members, and the scale member is moved in accordance with the angle formed by the two members. At the edge of the member, at the portion where the plate members intersect, there is provided an intersection position scale indicating the intersection position of the plate members corresponding to the angle formed by the two members. The intersection position of the members is read, and the pointer member of each scale member is positioned at the position of the slide scale corresponding to the intersection position.

At this time, the mutually corresponding scales of the intersection position scale and the slide scale may be connected by a line segment.

[0018]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment of a corner dimension measuring apparatus according to the present invention will be described with reference to the drawings. FIG. 1 is a front view showing a corner size measuring device, and FIG. 2 is an assembled perspective view showing a corner size measuring device.

As shown in these figures, a corner size measuring device (hereinafter abbreviated as a measuring device) includes a first plate 10 and a second plate 12 rotatably mounted on the first plate 10. And each of these plates 10,
12, scales 14 and 16 for measuring a dimension from a joint portion of the member to be measured to an arbitrary position on the measuring member are respectively attached.

The first plate 10 is a member made of, for example, a plate made of stainless steel or resin and formed in a substantially square shape, and has one end portion (the right end portion in FIG. 1) at its one end.
Bolt member 22 for mounting the second plate 12
An angle scale 34 for detecting an angle formed by the member to be measured at the time of measurement is engraved above (in the upper part in FIG. 1).

The scale 14 is slidably mounted on the other end of the first plate 10 (the left end in FIG. 1), and the scale 14 is formed according to the angle formed by the member to be measured. A slide scale 36 for moving and positioning is provided.

A pair of long holes 17 extending in the longitudinal direction (vertical direction in FIG. 1) of the scale 14 are arranged in the same direction in the same direction. Are inserted respectively. These butterfly bolts 30 are further screwed into screw holes 28 provided in the first plate 10, whereby the scale 1 is rotated.
4 is attached to the first plate 10. That is, the scale 14 is fixed to the first plate 10 in a state where the butterfly bolt 30 is tightened, and slides along the long hole 17 in a loosened state.

The scale 14 is formed with a measurement surface 14a having a scale for dimensional measurement on one side edge (left side edge in FIG. 1) and the other side edge (FIG. 1). A projection 18 extending toward the bolt member 22 is integrally formed on the right edge), and a pointer 19 for positioning the scale 14 on the slide scale 36 is provided on the projection 22. I have. That is, at the time of dimension measurement, after loosening the butterfly bolt 30, the scale 14 is moved, and the pointer 19 is positioned at a predetermined position on the slide scale 36 according to the angle formed by the member to be measured. The bolt 30 is to be tightened. At this time, a pair of positioning pins 32 are provided upright on the first plate 10 in the longitudinal direction of the scale 14 in order to prevent a decrease in the measurement accuracy due to the backlash of the scale 14. , The butterfly bolt 30 is tightened while the scale 14 is in contact with the positioning pin 32.

On the other hand, the second plate 12 is a member made of stainless steel or resin made of a plate material having a substantially triangular shape. At this time, a mounting hole portion 23 through which the bolt member 22 is inserted is formed. Further, a protrusion 11 is integrally formed on the upper part thereof, and the protrusion 11 is provided with a pointer 13 which points to the angle scale 34 of the first plate 10.

The scale 16 is slidably mounted on the lower end portion (the lower end portion in FIG. 1) of the second plate 12, and the scale 16 is moved and positioned according to the angle formed by the member to be measured. Slide scale 38
Is engraved.

The scale 16 has basically the same structure as the scale 14, and has a pair of long holes 17 extending in the longitudinal direction (the left-right direction in FIG. 1).
Are arranged side by side, and a butterfly bolt 30 is inserted into the long hole 17 via a washer 29. The scale 16 is attached to the second plate 12 by screwing the butterfly bolts 30 into the screw holes 28 of the second plate 12, and the butterfly bolts 30 are tightened or loosened. The scale 16 is the second plate 12
, Or slide along the long hole 17.

The scale 16 has a measurement surface 16a on which a scale for dimension measurement is formed at the lower edge (the lower edge in FIG. 1), and the upper edge (FIG. 1). A protrusion 20 extending toward the mounting hole 23 is integrally formed with the projection 20, and a pointer 21 for positioning the scale 16 on the slide scale 38 is formed on the protrusion 20. Is provided. That is, at the time of dimension measurement, as in the case of the scale 14, after loosening the butterfly bolt 30, the scale 16 is moved, and the pointer 21 is placed at a predetermined position on the slide scale 38 according to the angle formed by the member to be measured. The butterfly bolt 30 is positioned and tightened. Note that a pair of positioning pins 32 are also provided on the second plate 12 in the longitudinal direction of the scale 16 in order to prevent a decrease in measurement accuracy due to the play of the scale 16. The butterfly bolt 30 is tightened while the scale 16 is in contact with these positioning pins 32.

Then, the first plate 10 and the second plate 12 configured as described above, as shown in FIG.
The bolt member 22 of the first plate 10 is
Of the bolt member 22
The second plate 12 is fixed to the first plate 10 by tightening the wing-shaped nut 26, and loosened by tightening the wing-shaped nut 26. The second plate 12 is rotatable with respect to the first plate 10.

The configuration of the measuring device for the corner portion has been roughly described above. The principle of the measuring device will be described with reference to FIGS. 4 and 5, and then the configuration of the main portion of the measuring device will be described. 3 will be described in more detail.

First, as shown in FIGS. 4 and 5, a square OaFA having the origin O as one vertex and one side having a dimension Z is provided on the XY plane, and a diagonal point F is shared outside the square OaFA. , Two rectangles ABDF (rectangle TA) and rectangle abdF (rectangle TB) of the same shape having their long sides on the X axis and the Y axis, respectively,
Let us consider the case of rotating about. At this time, points a and b of the rotated rectangle TB are defined as points a 'and b', respectively.

First, when the rectangle TB is rotated counterclockwise about the point F by an angle θ as shown by a dashed line in FIG.
Let P be the intersection of the side a'b 'of B with the Y-axis, Q be the intersection of the extension R of this side a'b' with the X-axis, and {aFa '
= Θ1, ∠OPQ = θ2, ∠aFP = θ3, and the size of the line segment OQ is obtained. OQ = tan θ2 (aO-aP) (1) At this time, aO = aF = Z (2) θ = θ1 = θ2 (3) aP = a′P (4) θ3 = θ1 / 2 (5) aP = tan θ3 · aF (5) (6) Since the dimension of the line segment OQ is
From Equations (6), OQ = tan θ (Z−tan θ / 2 · Z) (7)

On the other hand, when the above-mentioned rectangle TB is rotated clockwise around the point F by an angle θ as shown by a dashed line in FIG. 5, the side a ′ of the rotated rectangle TB is obtained.
The intersection of the extension line R of b 'with the Y axis is S, and the intersection of the X axis is Q
∠aFa ′ = θ1, ∠OSQ = θ2, ∠a
When the size of the line segment OQ is obtained with FS = θ3, the following is obtained: OQ = tan θ2 (aO + aS) (8) At this time, θ = θ1 = θ2 (9) aS = a ′S (10) θ3 = θ1 / 2 (11) aS = tan θ3 · aF (12) The line segment OQ to be obtained is given by the following equation (13) according to the above equations (2) and (8) to (12): OQ = tan θ (Z + tan θ / 2 · Z) (13)

That is, since Z is a preset constant, if the rotation angle θ of the rectangle TB is obtained, the dimension of the line segment OQ is obtained based on the above equations (7) and (13).

Incidentally, in FIGS. 4 and 5, X
If the axis, the Y axis and the extension line R are each considered to be a plane, the X axis and the Y axis intersect at a point O, and the extension line R and the X axis shown in FIG. ∠b'QB> 9
0 °), the extension line R shown in FIG. 5 and the X axis intersect at a point Q, and can be a plane having an acute angle (∠b′QB <90 °). When an arbitrary point E is provided, the dimension to be determined according to the present invention can be the intersection of the above-mentioned planes, that is, the dimension from point O and point Q to point E.

Therefore, based on the state in which the rectangle TB is not rotated (that is, the state in which the side ab and the side AB are perpendicular), the position from the origin O to an arbitrary point E on the X axis is located on the side AB of the rectangle TA. Assuming that a scale capable of measuring the dimensions is provided, the dimensions of the line segment OE can be read directly from the scale.

On the other hand, when trying to determine the size of the line segment QE using the scale, as described above, the scale determines the exact size of the line segment OE only when the side ab and the side AB are perpendicular. Since the measurement can be performed, reading the scale directly on the scale simply reads the dimension of the line segment OE. The read dimension is the actual line segment Q.
The line OQ is smaller than the dimension of E as shown in FIGS.
It becomes short or long by the size of More specifically, as shown in FIG. 4, when ∠b′QB> 90 °, the length is longer by the dimension of the line segment OQ, and as shown in FIG. 5, when ∠b′QB <90 ° Is shortened by the dimension of the line segment OQ.

Therefore, if it is intended to directly read the dimension of the line segment QE using the scale, it is necessary to move the scale in accordance with the magnitude of ∠b'QB. More specifically, when ∠b'QB> 90 °, the scale reading dimension is smaller than the actual line segment QE by the line segment OE.
In this case, the scale is moved in the direction in which the read value of the scale is reduced by the dimension of the line segment OQ (that is, rightward in FIG. 4). In the case of <90 °, the scale reading dimension is shorter than the actual dimension of the line segment QE by the dimension of the line segment OQ. In this case, the scale reading is performed by the dimension of the line segment OQ. By moving the scale in the direction in which the value increases (that is, to the left in FIG. 5),
The dimension of the line segment QE can be read directly from the scale.

At this time, the dimension to move the scale (movement amount), that is, the dimension of the line segment OQ is as described above.
The calculation formula is different depending on the direction in which the rectangle TB is rotated, in other words, when the angle (∠b'QB) formed by the extension line R and the X axis is an obtuse angle and an acute angle. In the calculation of b′QB> 90 °, it is necessary to obtain the above based on the equation (7), and when ∠b′QB <90 °, it is necessary to obtain the above based on the above equation (13). .

Therefore, based on this principle, the above-described measuring device is used to rotate the two rotatable plates 10 and 1 as described above.
2 are provided, and slidable scales 14 and 16 are provided on these plates 10 and 12, respectively, so that the scales 14 and 16 are moved according to the angle formed by the member to be measured. Adopted a configuration as described below.

That is, in the above-described measuring apparatus, as shown in FIG. 3, each plate 10 is placed in a state where the measuring surface 14a of the scale 14 and the measuring surface 16a of the scale 16 are in vertical contact with the X axis and the Y axis, respectively. , 12 rotation axis center P
(That is, the axial center of the bolt member 22 and the mounting hole 23
The length Z1 of the perpendicular H dropped from the center of the rotation axis to the Y axis is equal to the length Z2 of the perpendicular G dropped from the rotation axis center P to the X axis, and the pointer 13 of the second plate 12 is perpendicular. It is formed on an extension of G.

Further, the angle scale 34 provided on the first plate 10 is, in the embodiment, 80 ° to 100 °.
The scale at intervals of 0.5 ° (1 ° in the drawing) indicating 90
In particular, the 90-degree scale is drawn on an extension of the vertical line G in the state of FIG.
That is, the angle formed by the member to be measured at the time of measurement can be detected within the range of 80 ° to 100 °.

On the other hand, the slide scale 36 and the slide scale 38 engraved on the plates 10 and 12 move the scales 14 and 16 according to the angle read by the angle scale 34, that is, the angle formed by the member to be measured. The position to be performed is indicated by an angle.
Graduations 3 at 1 ° intervals showing 80 ° to 100 ° for 6,38
6a and 38a are distributed around 90 °, and the scales of 90 ° in particular are marked on the vertical lines G and H, respectively. In addition, on each slide scale 36, 38,
As described above, in addition to the scales 36a and 38a at 1 ° intervals,
Further, scales 36b and 38b indicating 0.5 ° are engraved side by side.

The slide scale 36 and the slide scale 3
When the slide scales 36 and 38 are described in more detail, the slide scales 36 and 38 are both described in (7) and (13) of the principle description.
It is set based on the formula. That is, (7), (1
3) The constant Z in the equation is set to the above Z1 (= Z2), and 80 ° to 1 when 90 ° is set as a reference (that is, assumed to be 0 °).
The angle change amount of 00 ° is set to a value of 0.5 ° interval (for example, 85
In the case of 5 °, 5 °) is substituted for θ, thereby obtaining the slide dimensions of the scales 14 and 16. And
Each of the scales 14 and 16 is slid with reference to the perpendiculars G and H (90 ° position).
At this time, as described in the principle description, the position of the scale corresponding to an angle exceeding 90 ° and not more than 100 ° (that is, in the case of an obtuse angle) is obtained by the above equation (7). The position of the scale corresponding to the angle (that is, the acute angle) is obtained by the above equation (13).

When writing the scale, the scale based on the dimension obtained by the above equation (7) is 90 °.
When the position is set to 0, the scales 14 and 16 are written toward the plus side in the X-axis and Y-axis directions, that is, in the direction away from the origin O in FIG. 3, and the value obtained by the equation (13) is changed to the X-axis. And the minus side in the Y-axis direction, that is, the scales 14 and 16 are drawn toward the origin O.

In the above-described measuring apparatus, taking into account the ease of discrimination of the scale at the time of positioning the pointer 19 of the scale 14 and the pointer 21 of the scale 16, as shown in FIG. The scales 36a and 36b and the scales 38a and 38b of the slide scale 38 are shown as being inclined.

On the other hand, the scales 14 and 16 have scales for dimension measurement on the measurement surfaces 14a and 16a, respectively, as described above.
Scales at 1 mm intervals indicating mm are marked. At this time, the scales of the measuring surfaces 14a and 16a are set so that the measuring surface 14a of the scale 14 and the measuring surface 16a of the scale 16 are perpendicular to each other as shown in FIG. , 21 are 90 of the slide scales 36, 38.
Only in the state of being positioned at the ° position, accurate dimensions from the origin O to arbitrary positions on the X-axis and the Y-axis can be measured. The portion smaller than 20 mm is not provided in order to prevent the measurement from being impossible when there is a weld between the scales 14 and 16 and the origin O portion.

Next, a description will be given of a dimension measurement using the above-described corner dimension measuring apparatus constructed as described above.

In this description, as shown in FIG. 6, the member 41 provided with the piercing portions 44a and 44b for bolt fastening and the piercing portions 45a and 4
The member 40 provided with 5b is joined at an angle,
In addition, as an example, a case where a welded portion 43 by fillet welding is present at the joint 42 of these members,
, F1 and K1 from the respective members 40 and 41 to the respective perforated portions 44a and 45a are measured.

In the measurement by the measuring device, first, the butterfly nut 26 of the measuring device is loosened, and in this state, the scale 14 and the scale 16 are brought into contact with the surfaces of the members 40 and 41, respectively, and the butterfly nut 26 is tightened. To do. At this time, the members 40 and 41 and the scales 14 and 16
Between the measurement surfaces 14a and 16b.

Then, the measuring device is once removed from the members 40 and 41, and the angle scale 34 indicated by the pointer 13 is read.
That is, the angle between the member 40 and the member 41 is thereby detected.

After the angle formed between the member 40 and the member 41 is detected as described above, the wing bolt 30 of each of the scales 14 and 16 is loosened, and the slide scale 36 corresponding to the angle read by the angle scale 34 is obtained. , 38 so that the hands 19, 21 are positioned at the positions of the scales 14, 1
6 is slid so that the butterfly bolt 30 is tightened in a state where it is accurately positioned.

When the above operation is completed, the scale 14 and the scale 16 are again brought into contact with the surfaces of the members 40 and 41, and the scales of the positions of the perforated portions 44a and 45a are obtained from the respective dimensional scales of the measurement surfaces 14a and 16a. By reading,
The dimensions F1 and K1 can be measured.

Although FIG. 6 shows the case where the angle between the members 40 and 41 is obtuse, the procedure is exactly the same when the angle is acute, and the dimension can be measured in the same manner. .

As described above, according to the corner measuring device of the first embodiment, even when a welded portion such as a fillet weld exists at a joint portion between two members having an angle, this device can be used. It is possible to easily measure a dimension from the joint portion to an arbitrary position of each member. Therefore, as in the conventional example, it is possible to measure the dimensions of the corners without estimating the actual dimensions from the dimensions measured by bringing a steel scale into contact with the welded portion of the joint, or performing calculations or the like. And more accurate dimensional measurements can be made.

In the corner dimension measuring apparatus of the present invention, the corner dimension can be measured by one measuring apparatus without being affected by the angle formed by the two members. Even if it is necessary to measure at different corners of each tower or each part of the tower as in, etc., one measuring device can be used, and therefore, when working in high places such as a tower, etc. It is extremely advantageous for carrying.

Next, a second embodiment of a corner dimension measuring apparatus according to the present invention will be described with reference to the drawings. FIG.
FIG. 3 is a front view showing a dimension measuring device for a corner portion. The corner measuring device of the second embodiment is also based on the principle described in the first embodiment, and its configuration is basically the same as that of the first embodiment. Therefore, in the description of the corner size measuring apparatus, the same reference numerals are given to those which perform the same functions as the first embodiment, and the description of the parts having the same structure is omitted, and only the differences will be described below. This will be described in detail.

In the measuring device for the corner portion (hereinafter abbreviated as measuring device) of the second embodiment, as shown in FIG.
Each of the plates 10 and 12 is formed in a substantially triangular shape, and the first plate 10 and the second plate 12 have a shape that is turned upside down.

Unlike the first embodiment, these plates 10 and 12 are not provided with an angle scale 34 or a pointer 13 for indicating the same, and each scale according to the angle formed by the member to be measured is provided. The determination of the movement positions of the measurement positions 14 and 16 is performed by measuring the measurement side 50 of the first plate 10 and the measurement side 5 of the second plate 12.
2 is determined on the basis of the intersection position W.

That is, by utilizing the fact that the intersection position W between the measuring side 50 and the measuring side 52 differs according to the angle formed by the measured member, the angle formed by the measured member on the measuring side 50 and the angle measured by the measuring side 52 respectively. 0.5 ° for 80 ° to 100 °
Intersecting position scales 54 and 56 indicating the intersecting intersecting positions W are provided, and the scales 14 and 16 are moved based on these. At this time, slide graduations 36 and 38 set on the basis of the equations (7) and (13) are respectively written on the plates 10 and 12 as in the first embodiment. The corresponding scales of the slide scales 36, 38 and the intersection position scales 54, 56 are connected by line segments 58, 60. In other words, in the measuring device of the first embodiment, the positions of the slide scales 36 and 38 at which the scales 14 and 16 are to be moved are recognized in accordance with the angle read from the angle scale 34. In the example measuring device, the intersection position scale 5 recognized from the intersection position W between the measurement side 50 and the measurement side 52 is provided.
Following the line segments 58 and 60 in accordance with 4, 56, the slide graduations 36,
38 positions are recognized.

At this time, in consideration of the easiness of recognizing the scale at the time of measurement, for example, the scale is alternately changed in color and written to prevent the line segments 58 (or 60) from intersecting with each other. The slide graduations 36 and 38 are shown inclined in a direction different from that of the first embodiment.

The configuration of the corner dimension measuring apparatus of the second embodiment has been roughly described above. Here, the configuration of the main part of the measuring apparatus will be described in more detail with reference to FIG. FIG. 8 shows that the measurement surfaces 14a and 16a of the scales 14 and 16 in the measurement device
It shows a state in which it is made to abut on the X-axis and the Y-axis, respectively, on the Y-plane and made vertical.

Each measurement side 5 of each of the plates 10 and 12
0 and 52 are theoretically assumed to be a circle T having a radius r centered on the rotation axis center P and a circle t having a radius r centered on the origin O with reference to the state shown in FIG. , Circle T
When the angle formed by each of the scales 14 and 16 is changed, the first plate 10 and the second plate 12 are formed with the line segment PO as an axis. It moves symmetrically in the opposite direction, and the intersection position W of the measurement side 50 and the measurement side 52 moves on the line segment PO connecting the rotation axis center P and the origin O in the direction of arrow 62 or arrow 64 in FIG. To move to.

When setting the intersection position scales 54 and 56 marked on the measurement sides 50 and 52, for example, the scales 14 and 16 are actually brought into contact with two planes having an angle of 80 ° to 100 °. A simulation-like method in which a scale is marked at the intersection between the measurement side 50 and the measurement side 52 is also considered, but in the embodiment, the following description will be made based on the shapes of the plates 10 and 12. This is set by such a theoretical method, which will be described below.

That is, in the measuring device, as shown in the figure, the contact point between the measuring side 50 and the circle T is set to L.
The point L, the intersection position W, and the rotation axis center P
Assuming a right-angled triangle PWL formed by connecting points and considering the dimensions of the side LW of the triangle PWL, each scale of the intersection position scales 54 and 56 is set. That is, as described above, the position of the intersection position W moves along the line segment PO according to the angle formed by the measurement surface 14a of the scale 14 and the measurement surface 16a of the scale 16 (the angle formed by the member to be measured). Therefore, the size of the side LW in the right triangle PWL when the angle between the measurement surface 14a and the measurement surface 16a is 80 ° to 100 ° is obtained, and the point L is calculated based on the obtained size. If a scale is marked on the measurement side 52 as a reference, an intersection position scale 56 can be provided. The same applies to the intersection position scale 54.

At this time, first, the triangle PW when the angle formed by the measuring surfaces 14a and 16a of the scales 14 and 16 is a right angle
Consider L.

At this time, the dimension of the perpendicular G dropped from the rotation axis center P to the X axis and the dimension of the perpendicular H dropped from the rotation axis center P to the Y axis are made equal as described in the first embodiment. , The intersection position W between the measurement side 50 and the measurement side 52 is
The intersection of the square diagonal lines formed by these perpendiculars G, H, X axis and Y axis can be used. Therefore, assuming that the dimensions of the perpendiculars G and H are Z, the dimension of the side PW in the right triangle PWL can be expressed as PW = Z / √2 (14).

On the other hand, in the triangle PWL, ∠PW
When L = θA and ΔLPW = θB, these angles are

[0068]

(Equation 1)

ΘB = 180 ° − (90 ° + θA) (16). When the dimension of the side LW is obtained, LW = r / tan θA (r: radius of the circle T) (17) It can be.

Next, the measuring surface 14 of each of the scales 14 and 15
Consider a case where the angle between a and 16a is acute or obtuse. At this time, the side LW when the angle formed between the measurement surfaces 14a and 16a is an acute angle or an obtuse angle is L
When W ′ and θA are θA ′ and θB is θB ′, and the dimension of the side LW ′ is obtained, the following equation can be obtained: LW ′ = r / tan θA ′ (18) At this time, the angle θA ′ is given as follows: θA ′ = 180 ° − (90 ° + θB ′) (19)

By the way, the measuring surfaces 1 of the scales 14 and 16
Considering the amount of angle change at the angle θB when the angle formed by 4a and 16a is changed from the vertical state shown in the figure to an acute angle or an obtuse angle, as described above, each plate 10 and 12 Since they are rotated symmetrically as axes, the angle change amount is θb and the measurement plane 1
Assuming that the actual angle formed by 4a and 16a is θC, θb = (θC−90 °) / 2 (20) Therefore, when θB ′ is determined based on this, the following equation can be obtained: θB ′ = θB + θb = θB + (θC−90 °) / 2 (21), and numerical values of 80 ° to 100 ° are sequentially substituted into θC. Then, the dimension of the side LW ′ can be obtained from the above equations (18) and (19).

Therefore, the intersection position scale 56 can be obtained by writing a scale at the position of the side LW 'obtained as described above with respect to the point L on the measurement side 52.

Incidentally, the scale 5 of the intersection position with respect to the measurement side 50
4 can be set in the same manner, and the description thereof will be omitted. At this time, the first plate 10 and the second plate 1
2 is a shape that is turned upside down.
With respect to the intersection position scale 54 of 0, the intersection position scale 54 can be obtained by writing the scale symmetrically with respect to the intersection position scale 56.

The measuring apparatus of the second embodiment configured as described above has basically the same usage as the measuring apparatus of the first embodiment, but as described above, the measuring side 50 and the measuring side The intersection position scale 54, which is recognized from the intersection position W with
Following the line segments 58 and 60 in accordance with 56, the scales 36 and 36 on which the scales 14 and 16 are to be moved.
It differs in that it recognizes 38 positions. However, also in the second embodiment, similarly to the measuring device of the first embodiment, the dimensions from the joint between the two angled members to an arbitrary position on each member can be suitably measured.

In the first and second embodiments,
The measuring device at the corner has an angle of 80
Although it is configured so that measurement within the range of ° to 100 ° is possible, this is an example, and it is needless to say that measurement at a larger angle or at a smaller angle depends on the field of use. You may comprise so that it may become possible. Further, the scales of the scales 14 and 16 are also set to 20 mm to
Although described in the range of 150 mm, it is also possible to provide a scale so that a longer dimension can be measured depending on the purpose of use.

Further, in the first and second embodiments, a wing nut or a wing bolt is applied for fixing each of the plates 10 and 12 or fixing each of the scales 14 and 16. A structure including a ratchet mechanism or the like in which the plates 10, 12 and the scales 14, 16 are fixed at the scale positions may be used. According to this, it is not necessary to loosen or tighten the wing nut or wing bolt at the time of measurement as in this embodiment, which is convenient in terms of use.

[0077]

As described above, the present invention is an apparatus for measuring a dimension from a joint portion of two members having an angle to an arbitrary position on each member, wherein the two plate members are the same. Each of the plate members is mounted with a scale member which is in contact with the above members and is slidable along each of these members, and each of the plate members has a rotation axis. The members include
An angle scale is provided, and the other plate member
A pointer member for indicating the angle formed by the two members with the angle scale is provided, and each plate member is provided on each of the plate members in accordance with the angle formed by the angle scale and the two members read by the pointer member. Slide scales each indicating a position at which the slide should be made are provided, and each of the scale members is provided with a pointer member for positioning each scale member at a predetermined scale of the slide scale, so that the angle is set. It is possible to measure a dimension from a joint portion between the two members to an arbitrary position provided on each of these members without depending on an angle formed by the members or a welded portion.

[Brief description of the drawings]

FIG. 1 shows a first embodiment of a corner dimension measuring apparatus according to the present invention.
It is a top view showing an example.

FIG. 2 shows a first example of the corner dimension measuring apparatus according to the present invention.
It is an assembly perspective view showing an example.

FIG. 3 is a plan view showing a configuration of a main part of the corner dimension measuring device of the first embodiment.

FIG. 4 is a principle explanatory diagram for explaining the principle of the corner portion dimension measuring device.

FIG. 5 is a principle explanatory view for explaining the principle of a corner dimension measuring device.

FIG. 6 is a plan view showing a use state of the corner dimension measuring device of the first embodiment.

FIG. 7 shows a second example of the corner dimension measuring device according to the present invention.
It is a top view showing an example.

FIG. 8 is a plan view showing a configuration of a main part of a corner size measuring apparatus according to a second embodiment.

FIG. 9 is a schematic view showing an example of an assembling structure of a steel tower.

[Explanation of symbols]

 10 first plate 12 second plate 13 pointer 14,16 scale 19,21 pointer 34 angle scale 36,38 slide scale

Claims (3)

(57) [Claims] An apparatus for measuring a dimension from a joint portion of two members having an angle to an arbitrary position on each member, wherein two plate members have the same rotation axis and are relatively rotatable. While being overlapped, each of these plate members is attached with a scale member that is slidable along each of these members in contact with each of the members, and the one plate member is provided with an angle scale, The other plate member is provided with a pointer member for indicating the angle formed by the two members with the angle scale, and each plate member is provided with the angle scale and the two members read by the pointer member. Each of the scale members is provided with a slide scale indicating a position at which each of the scale members is to be slid according to the angle formed. A corner portion dimension measuring device provided with a pointer member for positioning at a predetermined scale of the scale. 2. An apparatus for measuring a dimension from a joint portion of two members having an angle to an arbitrary position on each member, wherein the two plate members have the same rotation axis and are relatively rotatable. At the same time, each of the plate members is fitted with a scale member which is in contact with the above-mentioned members and is slidable along each of these members. At the intersection of the two members, an intersection position scale indicating the intersection position between the plate members according to the angle formed by the two members is provided, and each of the scale members according to the intersection position read by the intersection position scale is provided. A slide graduation indicating a position to slide the pallet is provided, and each scale member is provided with a predetermined graduation of the slide graduation of each plate member. A dimension measuring device for a corner portion, wherein a pointer member for positioning is provided. 3. The corner according to claim 2, wherein said intersection position scale and said slide scale marked on each of said plate members are respectively formed by connecting corresponding scales with a line segment. Dimension measuring device.